9. shot (n.) a consecutive series of pictures that constitutes a unit of action in a film
The vacuum level is determined by the pressure differential between the evacuated volume and the surrounding atmosphere. Several units of measure can be used. Most refer to the height of a column of mercury â usually inches of mercury (in.-Hg) or millimeters of mercury (mm-Hg).
2.6.1 For long-term samples collect 10 L of air at 0.1 L/min (100-min samples). The recommended air volume is significantly lower than the breakthrough volume, but 10 L was chosen to provide a reasonable safety margin in the event other solvent vapors are present in the sampled air.